Pathologic was missing because of a .git folder inside.

[yaffs-website] / web / modules / contrib / advagg / advagg_validator / advagg_validator.info.yml

name: 'AdvAgg CSS/JS Validator'
description: 'Validate the CSS and JS files used in Aggregation for syntax errors.'
package: 'Advanced CSS/JS Aggregation'
# core: 8.x
type: module

# Information added by Drupal.org packaging script on 2017-05-05
version: '8.x-2.4'
core: '8.x'
project: 'advagg'
datestamp: 1493949192